Three women arrive at a private party and are let in to join the fun. In the upstairs hallway three men are watching the women on the dance floor. The one in the middle tells the other two to pick a target. One of the guys, Paul Sanders, picks one of the three girls who just arrived and goes to "take her down". He pretends to find something on her blouse to open a conversation and he seems to be doing pretty well. In the other end of the room the other guy, Todd Manning, is having less luck. He watches his buddy take his flirt upstairs and moves on to a new target. After a while he gets lucky and a woman follows him to one of the bedrooms. Todd goes to put his coat in the closet but when he opens it Paul falls out, dead.
The CSI team arrive at the scene. Tripp informs Horatio that an ice pick was the murder weapon. He also tells him that the club is owned by Wayne Reynolds, who teaches men how to pick up girls. Paul was one of his students. Alexx finds an L written on Paul's chest, presumably by the killer. The killer stabbed Paul in a rage, and the punctures made by the ice pick caused him to bleed out fast. Wolfe finds a fiber on Paul's shirt and then moves on to process the rest of the scene. Horatio gets a phone call from an unknown police officer and leaves.
Horatio arrives in a park where the officer who called him is waiting. He tells Horatio that he picked up a girl buying drugs on the board walk and she told him to call Horatio. Horatio is visibly upset to see the girl is none other than Delko's sister Marisol. The officer tells him that the dealer got away, but they found five baggies of what they suspect is marijuana on her. Horatio tells him to get it to his lab. He will transport Marisol. Marisol apologises for having called Horatio and dragged him into it, but she didn't want to call her brother after he was suspected of using drugs. She also says she bought the drugs to help with her cancer pain, but five baggies is too much for one person. Horatio tells her that unfortunately she is under arrest and she needs to come with him.
Back at the station Tripp is questioning Todd, who tells him he was just about to score with the woman he brought up, which is the ultimate prize in their seminar game. Tripp is having a hard time understanding why he opened the closet where Paul's body was found. He doesn't get why Todd was worried about his jacket when he was about to have sex. Todd says that taking concern in your warderobe is something they learn at the seminar. Tripp still doesn't get it, and keeps the jacket for processing.
Meanwhile, Calleigh and Wolfe are over at the club where the party was held, talking to Wayne Reynolds, the owner. He confirms that Paul was one of his students, but says his class had nothing to do with the murder. In fact, he cannot be assosciated with it at all. He has a book coming out and is going world wide with his business. The CSIs are far from concerned about his business. They bring a jar back to the lab with them, which contains notes where women, or targets as Wayne calls them, have written down their names and phone numbers to get invited to the parties held at the club. Wolfe also makes sure to bring in Wayne's clothes to compare with the fiber they found.
Back at the lab Aaron has looked at the fiber and tells Wolfe that it's soy, which is a natural fiber which is fairly uncommon in clothing. This makes it a whole lot easier to determin whether it came from Todd's shirt or from Wayne's.
Calleigh is busy looking at screen projections of the handwritten notes they found in the jar. Wolfe comes in and Calleigh notices that he is squinting. She asks him if it is because of his nail injury, which clearly annoys him. He tells her that he is simply tired from having worked a double shift. It's clear that he wants her to drop the subject. One of the notes in the jar has handwriting which matches the L found on Paul's chest. Wolfe leaves to bring the woman who wrote it in for questioning.
The woman, Heather Larkin, admits that she was there and that she met the victim. She tells Wolfe that he went through the whole act with her, which included pretending to find lint on her shirt to break the ice, giving her an intentional insult and closing with a kiss. She found it pathetic, but went along with his game and followed him upstairs. When he expected her to sleep with him she got angry and wrote an L for "loser" on him before walking away. She tells Wolfe she is sorry that he's dead but she is not surprised. Guys like him treat women like disposable prizes and any girl there could have wanted him dead.
Horatio pays Aaron a visit and tells him to process the baggies they got from Marisol. He stresses that Aaron should follow protocol to the letter and make sure that no one can question the results. Aaron proceeds to analyse two of the bags at random but does not get a name from Horatio.
Meanwhile Delko runs into his sister, surprised to find her at headquarters. Before Marisol can tell him anything Horatio arrives and asks to speak with him. He tells him that Marisol made a buy and that he intervened on the arrest. Marsol admits that she lied to Horatio; she wasn't just buying for herself but for her cancer support group. Delko is visibly angry and scared. She has bought more than an ounce with intention to distribute; it could send her to jail for ten years. Marisol is getting scared too; it's clear that she didn't realise how serious her situation was. Horatio tells Marisol she can talk to no one but him and Delko needs to stay away from this. Delko refuses to let the lieutenant take the fall for his sister but Horatio has made up his mind. He leaves with Marisol to take her to booking.
The soy fibres came from Wayne's shirt, and was the result of friction. Wayne confesses that he had an argument with Paul after he found out that Paul had attended the seminars to take notes and start his own business. He tries to work his tricks on Calleigh, but she is immune to his game and points out that they now have a motive for him.
Wolfe talks to Alexx, who has noticed that Paul has been wearing a wedding ring. Wolfe has trouble seeing the indentation on the skin which makes Alexx concerned about his eye. It has not gotten better in spite of two weeks of antibiotics. Wolfe doesn't want to hear it. He leaves to find Paul's wife.
Paul's wife, Brenda, is shocked to find out she is a widdow. They have only been married four months. Wolfe asks her if she was at the club and she says she was at home. Yet she has burn marks on her arm from sparklers, which proves that she was in fact at the club since sparklers in the drinks is a signature thing at the club. She confesses that she was there. Paul had told her he was just doing research but she wasn't sure if she could believe him, so she went to see for herself and found him going upstairs with Heather. She was crushed, but not to the point of wanting to kill him.
Wolfe asks Cooper to bring up the wedding registry for Paul and Brenda. Cooper is more preoccupied with gossiping however, and keeps bringing up Marisol. He saw her in the lobby and heard she had been busted for buying drugs. Wolfe tries to steer him off that course but with little luck. Cooper suspects that Marisol carries a torch for Horatio. Wolfe doesn't want to hear gossip about his boss and his co-worker's sister and tells Cooper to focus on the job at hand. They find that one of the gifts on the registry was an ice pick, just like the one used to kill Paul.
Back with Brenda Wolfe tells her that she is looking very guilty. She claims the ice pick was stolen a week ago. He goes to check on her story and finds that it checks out.
Meanwhile Horatio finds Delko going through the lab report on the marijuana they found on Marisol. It comes up to over an ounce. Delko is worried; Marisol is too sick to survive jail time. Horatio has been looking into some pricy lawyers but neither Delko nor Marisol can afford that. Horatio says he will take care of the costs. The state attorney calls about Marisol. Someone has leaked the information.
Horatio meets up with the attorney, Monica West. She does not hide that it is looking bad. Last week Delko was suspected of using drugs and now his sister has been arrested for possession with attempt to sell. Horatio tells her about Marisol's cancer and that she was only smoking to help her nausea. West brushes it off as a convenient sob story and refuses to give Horatio the name of the person who told her about the case. She is not prepared to let this go.
Delko and Wolfe return to the crime scene to go over it again. Wolfe has already sweeped it, but without saying it out loud they are both concerned that his eye problem might have made him miss something. It turns out the suspicion is correct; Wolfe missed a pen lying on the floor. The prints on it belong to Heather Larkin, but her name is stated as Karen Manning. They bring her in and she tells Tripp that Heather Larkin is her pen name. She is actually the sister of Todd Manning, the man who found Paul's body. She was at the club to do an exposé on male pick-up artists. She had heard of the seminar from her brother and was disgusted at what it had turned him into.
Horatio asks Aaron to analyse the other three baggies, hoping to find some way out for Marisol. It turns out they are in luck. The first two baggies Aaron analyzed contained marijuana but the other three were bunk. Aaron tells Horatio that he is not comfortable with Delko having been in the lab alone, he might have switched the three untested baggies for bunks. Horatio doesn't believe Delko would do that, but Monica West is less convinced.
Delko and Horatio return to the park where Marisol was arrested, hoping to find the dealer. They find a baggie with marijuana joints and the DNA on them leads to Keith Gifford. He has three prior charges of dealing and is facing a long jail sentence. He is desperate to make his situation better and agrees to cooperate. He tells West that he did sell five baggies to Marisol but three of them were bunk. He swears that he wasn't promised a favor from Horatio in exchange for lying about the product he sold. West is forced to bring it down to a misdemeanor, but lets Horatio know that she is no less suspicious about his lab.
Wolfe and Calleigh make progress with the case when they find an aromatic disbursement unit. It broadcasts fragrances into a room at specific times and can tell them what fragrance was in the room during the time of the murder. The last fragrance is actually human pheromones, and was the fragrance broadcasted during the murder. Pheromones are found on Todd's clothes, placing him at the scene of the crime. He is brought in and realises he has no choice but to confess. He saw his sister go upstairs with Paul and went in to talk to him. Paul bragged that he had scored with her and she was begging him to do it again, which made Todd furious. In a fit of rage he stabbed Paul with the ice pick and hid him in the closet. The ice pick had been brought by Paul as part of the seminar; they were supposed to bring expensive things to impress the women. Todd stresses that he had to protect his sister's honor. He is shocked to learn from Calleigh and Wolfe that Paul never slept with Karen; he lied to save face. She had gone there to save her brother and instead her brother was going to jail. Calleigh adds that ironically, where Todd is going he might end up being the sexual target.
Marisol finds Horatio out by the pier. She is surprised that they let her go. Horatio tells her it can't happen again and she understands. She wants to thank him but he says it's not necessary. Marisol asks if she can make him dinner. Horatio doesn't think it would be a good idea since he is her brother's boss. She insists, and after some hesitation Horatio agrees. She smiles and tells him she's looking forward to it. As she leaves Horatio can't keep a smile off his face. He is clearly looking forward to it too.





